I’m reading about a misterious “dark energy” that is pushing the universe outward. Are we sure the “dark energy” isn’t similar to “centrifical force” and may be an illusion caused by rotation?
I’m sure the cosmologists have considered this but since everything in the unviverse is rotating, I’m sure the universe is as well. Can’t this explain the expansion?
Is the universe expanding in all three axis’ or can we tell?
There is no evidence that the universe as a whole is rotating. (In fact, since the universe has no central spot, the question “rotating around what?” comes into play.)
The universe is expanding everywhere in all directions and dimensions. Dark energy is a pushing force, a countervailing force to gravity. It has no meaning as an analogue to centrifugal force.
A rotating universe is a solution to Einstein’s Equations of General Relativity that gives some very peculiar effects. These effects are not the same as the effects of a cosmological constant (the most basic formation of dark energy) and seemingly observed in the current concordance model or the measurements from Type Ia Supernovae.